Self-contained air conditioning unit



Dec. 26, 1950 c. M. ASHLEY SELF-CONTAINED AIR CONDITIONING UNIT Filed. Jan. 14, 1948 Patented Dec. 26, 1950 UNITED STATES PATENT OFFICE 2,535,775 SELF-CONTAINED AIR CONDITIONING UNIT Carlyle Martin Ashley, Syracuse, N. Y., assignor to Carrier Corporation, Syracuse, N. Y., a corporation of Delaware Application January 14, 1948, Serial No. 2,247 Claims. (01. 62-129) This invention relates to self-contained air con ditioning units of the window type, and,more particularly, to self-contained units provided with means to assure that a desired volume of exteupon changes in the direction of the wind outside the area being conditioned, frequently, the evaporator fan was unable to draw fresh air within the room.

The chief object of the present invention is to provide a self-contained air conditioning unit in which this disadvantage is eliminated, the structure being so designed as to assure'at any desired time a suitable volume of fresh air for supply to the room being conditioned.

An object of the present invention is to provide a self-contained air conditioning unit of the window type inwhich a duct is provided so designed as to permit the condenser fan to move a desired volume of fresh air therethrough to the zone of influence of the evaporator fan. Other objects of my invention will be readily perceived from the following description.

This invention relates to a self-contained air conditioning unit comprising in combination a condenser compartment, a condenser in the compartment, a fan in the compartment to pass fresh or exterior air through the condenser, an evaporator compartment, an evaporator therein, a second fan in the evaporator compartment to pass room air through the means connecting the compartments to permit the first fan to pass the exterior zone of influence of the second fan.

The attached drawing illustrates a preferred embodiment of the invention, in which Figure 1 is a plan view of the self-contained air conditionin unit with the casing removed to display the arrangement of the various elements in the structure; and

Figure 2 is an isometric view of the unit shown in Figure 1.

Referring to the attached drawing, there is 3 separated by a partition An opening 5 is formed in partition 4 and is adapted to be closed by a damper 6 for a purpose hereinafter described.

A condenser 1 is placed in compartment 2 and is connected by a suitable line 8 to the compres sor of a semi-hermetic or hermetic motor-compressor unit 9. A fan l0 mounted on shaft H of motor I2 is placed in compartment 2 rearwardly of condenser 1 and serves to draw exterior air through grilles (not shown) in the easing and to pass such air through the condenser. A chamber I3 is placed between condenser 1 and fan l0, air in chamber I3 being under slight compression (higher pressure than without the chamber).

An evaporator i4 is placed in compartment 3, fan is serving to draw room air through grilles in the casing and to pass such air through the evaporator to condition the same. The evaporator I4 is connected to condenser 1 and unit 9 of the refrigeration system. Fan i5 is mounted on shaft l6 of motor l2 in substantial alignment with fan In. Preferably fan It is more powerful than fan l5.

A duct l'l extends within compartment 2 and serves to connect chamber N with compartment 3. Since air in chamber I3 is under slight pressure, such air is forced through duct i'i, when damper 6 is open, to compartment 3 within the zone of influence of fan l5 thereby permitting the supply of a regulated amount of exterior or fresh air to the room being conditioned at all times. In effect. fans I D and 15 are placed in series to supply the desired fresh air to the room being conditioned.

In operation, it will be appreciated condenser fan In maintains air in chamber l3 under slight compression. Duct 11 connects chamber H with compartment 3. Thus, when damper 6 is open, operation of the condenser fan forces or urges a desired quantity of fresh air under compression through duct I! to the evaporator compartment 3 where it is brought within the zone of influence of evaporator fan I5, picked up by such fan, passed through the evaporator M with room air and distributed to the room.

The present invention provides a ready and simple means of assuring a desired supply of exterior air to a room bein conditioned without regard to changes in the direction of the wind exteriorly of the area being conditioned. The means so provided do not increase the operating expenses of unit while the initial cost of the unit is increased only a slight degree.

While I have described and illustrated. a preferred embodiment of my invention, it will be understood my invention may be otherwise embodied within the scope of the following claims.

I claim:

1. In a self-contained air conditioning unit, the combination of a condenser compartment, a condenser in said compartment, a ran in the compartment to pass exterior air through the condenser, a chamber disposed between the condenser and the condenser tan, air in said chamber being under compression created by the condenser i'an, an evaporator compartment, an evaporator therein, a second fan in the evaporator compartment to pass room air through the evaporator, a duct extending within the condenser compartment connecting the chamber and the evaporator compartment, pressure of air in said chamber being sufiicient to force air through the duct into the evaporator compartment, said second fan being located with respect to the outlet of said duct in a position to receive air passing through the duct.

2. In a self-contained air conditioning unit, the combination of a condenser compartment, a condenser in said compartment, a fan in the compartment to pass exterior air through the condenser, a chamber disposed between the condenser and the condenser fan, air in said-chamber being under compression created by the condenser fan, an evaporator compartment, a partition having an opening therein separating the compartments, a damper movable to open and to close the opening, an evaporator in the evaporator I compartment, a second fan in the evaporator compartment to pass room air through the evaporator, a duct extending within the condenser compartment connecting the chamber and the evaporator compartment, pressure of air in said chamber being sufficient to force air through the duct into the evaporator compartment, said second fan being located with respect to the outlet of said duct in a position to receive air passing through the duct.

3. A self-contained air conditioning unit according to claim 2 in which the first fan is more powerful than the second fan, the fans being dis- 4 posed in substantial alignment in the structure. and a motor is provided to actuate the fans.

4. In a self-contained air conditioning unit. the combination of a first compartment, a condenser in said compartment, a fan in said compartment to pass exterior air through said condenser, a compressor in the compartment connected to the condenser, means for actuating the compressor, a chamber disposed between the condenser and the Ian, air in said chamber be ing under compression created by the condenser fan, a second compartment, a partition having an opening therein separating the compartments, a damper disposed in the second compartment movable to open and to close the opening in the partition, an evaporator disposed in the second compartment, a second fan in the second compartment to pass room air through the evaporator, said fans being disposed in substantial alignment, the first tan being more powerful than the second fan, a motor to actuate said fans, a duct in the first compartment connecting the chamber and the second compartment, pressure of air in the chamber forcing air through the duct into the second compartment, said second ian being located with respect to the outlet of said duct in a position to receive air passing through the duct.

5. A self-contained air conditioning unit according to claim 1 in which the fans are disposed in series to suppl fresh air to the area being conditioned.

CARLYLE M. ASHLEY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

